|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XXI
||Vat Polymerization of Adaptable and Reconfigurable Three-dimensional (3D) Micro-architected Materials
||Julia R. Greer, Amylynn Chen, Zane Taylor, Xiaoxing Xia
|On-Site Speaker (Planned)
||Julia R. Greer
Creation of stimulus-responsive, adaptable materials can be achieved by incorporating architecture into material design combined with chemical synthesis within additive manufacturing platform. To harness beneficial properties of 3D nano-architected meta-materials, it is critical to assess their properties at each relevant scale while capturing overall structural complexity. We present several material systems of AM-compatible resin synthesis that induces adaptability and reconfigurability, and in some cases self-healing. Examples include a simple vat polymerization “one-pot” approach to construct polyacrylic acid (PAA)-based metallo-polyelectrolyte complexes (MPECs) architectures produced via PěSL where the material obtains >800% strain at break and ~3MPa failure strength and demonstrate mechanical compliance and self-healing, as well as environmental sensitivity. Other techniques that utilize hydrogel-infusion based AM techniques are capable of producing adaptable and reconfigurable 3D-architected materials: from electroactive polymers that expand in response to electric field to moisture-absorbent interpenetrating polymer networks (IPNs) that undergo liquid-to-liquid phase transitions, to electrochemically-induced morphological changes.